Global Patent Index - EP 2840633 A1

EP 2840633 A1 20150225 - Lithium accumulators based on lithiated iron phosphate and carbon

Title (en)

Lithium accumulators based on lithiated iron phosphate and carbon

Title (de)

Lithium-Akku auf Lithiumeisenphosphat und Kohlenstoffbasis

Title (fr)

Accumulateurs au lithium à base de phosphate de fer lithié et de carbone

Publication

EP 2840633 A1 20150225 (FR)

Application

EP 14184728 A 20110128

Priority

  • EP 10151986 A 20100128
  • EP 11701509 A 20110128
  • EP 2011051203 W 20110128

Abstract (en)

[origin: EP2355214A1] Preparing a composite material of lithium iron phosphate and carbon comprises: formation of a precursor mixture containing lithium phosphate, iron(II) phosphate and a material containing carbon in an inert atmosphere; grinding the precursor mixture; and calcining the grinded mixture during which the pyrolysis of material containing carbon and the formation of crystals of lithium iron phosphate takes place. Preparing a composite material of lithium iron phosphate and carbon comprises: formation of a precursor mixture containing lithium phosphate, iron(II) phosphate and a material containing carbon in an inert atmosphere; grinding the precursor mixture; and calcining the grinded mixture during which the pyrolysis of material containing carbon and the formation of crystals of lithium iron phosphate takes place, where the grinding is an high energy industrial nano-grinding with balls for a predetermined period to produce the precursor mixture to mechanical energy activation for obtaining micrometer mixture of nanometric particles. Independent claims are included for: (1) electrode material (A) having lithium-iron-boron-phosphate of formula (Li aFe bB cPO 4/C), where (A) is in the form of micrometric mixture of nanometric particles having a maximum size of less than 50 nm measured by transmission electron microscopy and the micrometric mixture has an average size of 0.5-60 mu m, preferably 2-15 mu m in methanol measured by laser granulometry; (2) electrode made of composite material of lithium iron phosphate and carbon, having a surface capacity of less than 2 mAh/cm 2>, a specific practical electrode capacity of 150-170 m Ah/g, preferably 155-170 m Ah/g or comprising the electrode material; and (3) lithium-ion electrochemical cell comprising the electrode. a : 0.85-1.08; and b, c : 0-0.1, where the gamma + beta is = 1.

Abstract (fr)

Phosphate de fer lithié et de carbone sous forme agrégats mixtes micrométriques de particules nanométriques, électrode et cellule obtenues à partir de celui-ci et son procédé de fabrication caractérisé par une étape de nanobroyage.

IPC 8 full level

H01M 4/58 (2010.01); C01G 49/00 (2006.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01)

CPC (source: EP KR US)

C01G 49/009 (2013.01 - EP KR US); C01G 53/006 (2013.01 - EP KR US); H01M 4/362 (2013.01 - US); H01M 4/364 (2013.01 - KR US); H01M 4/5825 (2013.01 - EP KR US); H01M 4/587 (2013.01 - KR US); H01M 4/625 (2013.01 - EP KR US); H01M 10/0525 (2013.01 - EP KR US); C01P 2002/52 (2013.01 - EP US); C01P 2002/54 (2013.01 - EP US); C01P 2002/72 (2013.01 - EP US); C01P 2004/03 (2013.01 - EP US); C01P 2004/51 (2013.01 - EP US); C01P 2004/52 (2013.01 - EP US); C01P 2004/61 (2013.01 - EP US); C01P 2004/62 (2013.01 - EP US); C01P 2006/11 (2013.01 - EP US); C01P 2006/12 (2013.01 - EP US); C01P 2006/40 (2013.01 - EP US); H01M 2004/021 (2013.01 - EP KR US); H01M 2004/028 (2013.01 - KR US); Y02E 60/10 (2013.01 - EP KR US)

Citation (applicant)

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 2355214 A1 20110810; EP 2355214 B1 20131225; CN 102725887 A 20121010; CN 102725887 B 20160217; EP 2529433 A1 20121205; EP 2529433 B1 20180307; EP 2840633 A1 20150225; EP 2840633 B1 20181017; ES 2671318 T3 20180606; HK 1206488 A1 20160108; JP 2013518379 A 20130520; JP 5649662 B2 20150107; KR 101758244 B1 20170714; KR 20120137357 A 20121220; RU 2012136180 A 20140310; RU 2551849 C2 20150527; TW 201138193 A 20111101; TW I543430 B 20160721; US 2013040198 A1 20130214; US 2014186705 A1 20140703; US 2016072122 A1 20160310; US 8703332 B2 20140422; US 9287558 B2 20160315; WO 2011092283 A1 20110804

DOCDB simple family (application)

EP 10151986 A 20100128; CN 201180007320 A 20110128; EP 11701509 A 20110128; EP 14184728 A 20110128; EP 2011051203 W 20110128; ES 11701509 T 20110128; HK 15107060 A 20150723; JP 2012550459 A 20110128; KR 20127022428 A 20110128; RU 2012136180 A 20110128; TW 100103366 A 20110128; US 201113574754 A 20110128; US 201314139475 A 20131223; US 201514945278 A 20151118